HydroBASINS lev08 watershed · #2080556890
Bassin de la Truyère
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 1 administrative regions : Lozère
Sub-basin area
236,4km²
Upstream area
236,5km²
Discharge
3,3m³/s
Mean elev.
1 130m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
19 communes (GADM L5)Available for FRA, RWA
- Javols30.98 km²100% commune
- Saint-Denis-en-Margeride30.10 km²79% commune
- Fontans23.42 km²69% commune
- Les Laubies23.16 km²100% commune
- La Villedieu21.15 km²93% commune
- Serverette17.45 km²100% commune
- Sainte-Colombe-de-Peyre16.60 km²77% commune
- La Chaze-de-Peyre14.21 km²75% commune
- Saint-Sauveur-de-Peyre13.49 km²48% commune
- Aumont-Aubrac11.15 km²41% commune
- Estables9.92 km²30% commune
- Saint-Gal7.56 km²78% commune
- Rimeize6.08 km²19% commune
- Saint-Amans5.92 km²59% commune
- Ribennes2.79 km²11% commune
- Saint-Paul-le-Froid2.38 km²5% commune
- Sainte-Eulalie0.55 km²3% commune
- Le Buisson0.02 km²0% commune
- La Panouse0.01 km²0% commune
2 intersecting protected areas
Aubrac
IUCN VRegional Nature Park
86.46 km² overlap
Montagne de la Margeride
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.78 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 504 distinct species · 25 574 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de la Truyère : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 5 bulles famille, 77 interactions GloBI documentées sur 4 types (connectance 12.2%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
7,5°C
Annual rain
824mm
Moisture idx (CMI)
0,03
Runoff
452mm/an
PET
792mm
AET
641mm
Mean slope
5,2°
Water table
349cm
Forest
61%
Crops
8%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)